add MIT license
Merge pull request #554 from ryanxcharles/mit-license

add MIT license
update to socket.io 1.0, adds connection error warnings
add tests for Socket service
add karma test for controller and service
fix in updateVersion with tests
updates with @cmgustavo comments
Merge pull request #553 from matiu/feature/sockets

update to socket.io 1.0, adds connection error warnings